Contaminant Reduction through Safer Product Chemistry Minnesota s Initiative
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1 Contaminant Reduction through Safer Product Chemistry Minnesota s Initiative ISTC Sustainability Seminar October 13, 2016 Al Innes MPCA Safer Product Chemistry Coordinator
2 Outline Background on green & safer chemistry in MN Pollution prevention projects: BPA & BPS in thermally-printed paper PAHs in pavement sealants NPEs in detergents (Salt in winter pavement maintenance) 2
3 MPCA actions and approach Moving in recent years to work proactively and preventively to reduce the use and presence of problematic chemicals in products Leverage and bolster drivers 3
4 Drivers Monitoring and study - more; more advanced Consumer awareness/activism Company-by-company red lists Major buyers requiring disclosure Alliances of major buyers/brands Product testing buyers, regulators, activists Buyer audits and third-party certifications 4
5 Key sectors Children s esp. with higher exposure potential Personal care Clothing (and fabric care) Home and office maintenance Building products and furnishings Food/beverage packaging 5
6 Connections to sustainability In general, consumer-facing firms have integrated more into sustainability programs Other sectors, not so visible vs. climate, water or sometimes downplayed Rising population More products, more chemistry (96%) Legacy of toxics, especially PBTs Full impacts on humans and ecosystems are unknown, but changes are becoming evident 6
7 MPCA green & safer product chemistry Partners Projects Reduce loadings, effects Use data to set priorities Current chemistry Monitoring & compliance Policy Education & capacity Future greener chemistry 7
8 Reduction of Bisphenol A (BPA) & Bisphenol S (BPS) in thermallyprinted paper Initial project supported in part by a grant from the U.S. EPA
9 BPA impacts Affects health of humans and aquatic life Endocrine active mimics estrogen Linked to obesity, proliferation of breast cancer cells, attention and other developmental issues, early onset of puberty In aquatic species, reduces ability to reproduce (e.g. feminization of males) Emerging research on BPS similar structure 9
10 BPA basics 14B lbs/year used in polycarbonate, resins, coatings Present in 95% of people Surface waters Even remote lakes Degrades, but pseudo-persistent due to continual inputs Groundwater Leaking landfills Sediments Fish With other compounds
11 How does thermal paper work? Science News 11
12 What we know Cashiers have more BPA in blood and urine Unbound on receipts Easily transferred to skin and absorbed Transfer and uptake are facilitated by moisture, alcohol sanitizers, lotions, grease 10-60% of BPA on hands will be absorbed Less chemical on unprinted side EPA DfE: no clearly-safer substitutes in 2014 Businesses, employees and citizens can take steps to reduce use and exposure 12
13 Our concerns Most exposed populations Cashiers Most vulnerable populations Pregnant women & women of childbearing age (fetuses) Nursing women (infants) Children Environmental loadings over life cycle 13
14 Project approach Voluntary Hospitality sector Assistance with switch to digital receipts $1000 grants Baseline metrics Amount of paper used Paper testing Exploration of other strategies Reach out to network of proactice companies 14
15 /Screenshot% % png 15
16 Simple steps companies can take Minimize use Ask customers: Do you need a receipt? or "Is an e- receipt OK? Only print if needed Do not print merchant copy if transaction is already kept electronically Minimize handling of thermal receipts Minimize friction/wipe action, like crumpling Minimize grip pressure; use two fingers only Avoid moisture, grease, lotion, alcohol-based cleaners Use gloves 16
17 Results of project actions Don t automatically give receipts that aren t wanted (8-37% reduction) Don t print if receipts are kept electronically (50% or more reduction) Switch to e-receipt (2-18% paper reduction) Double-sided thermal paper (no chemical reduction; 40-50% less paper) Switch to a non-phenol paper (99.9% reduction; little or no paper reduction) 17
18 Small retail results Data from 8 small businesses: 7,300 pounds of paper and 109 pounds of BPA/BPS reduced % reduction from their current practices 14 other small business partners could reduce 1,052 3,155 pounds of paper & pounds of phenol Further promotion is planned: reducing thermal paper use and replacing with non-phenol 18
19 Large retailers MPCA worked with Best Buy which then pushed e-receipts and went non-phenol in US By reducing or replacing phenol papers, big stores could reduce BPA/BPS use by 2 to 5 tons (at 1.5% by weight; 1 million + rolls/year) MPCA estimates US thermal paper use ~146,000 tons annually - if similar 10-30% paper reduction: 14,600 43,800 tons less paper tons less endocrine-active chemical use 19
20 Long-term metrics Environmental monitoring Bio-monitoring Monitor data on quantities used (EPA Chemical Data Reporting, other) 20
21 Reduction of Polycyclic Aromatic Hydrocarbons from Coal Tar- Based Pavement Sealcoats (CTS) supported in part by a grant from the U.S. EPA Great Lakes Restoration Initiative (GLRI)
22 Sealcoat basics Black liquid spread on asphalt pavement Non-road surfaces Driveways, parking lots, playgrounds, etc. Especially in suburban areas CTSs are NOT typically used on public roadways CTS used since ~1960 and peaked soon after 2000 Used mostly east of the Rockies (coking process) 2007 data: 85 million gallons/year CTS sold in U.S. At 5%+ PAH, over 50,000,000 lbs PAHs/year Released by vaporization, weathering, tire wear, plowing 22
23 Courtesy: Judy Crane, MPCA
24 Varney Pond, White Bear Lake, Minnesota 40 years, 10,000 cubic yards, mostly near culverts Rule of thumb is $50/yard: sampling, digging, trucking to lined landfills, plus tipping fees If 10% of sediments in 20,000 MN ponds exceeds the top PAH reference value = $1 billion cost to Minnesota cities
25 Summarizing the Case for Action on CTS PAHs potential for cancer and developmental impacts Stormwater ponds fill up with sediment, some high in PAHs Tripled cost of clean-out and proper management in MN 50% or more of PAHs in urban sediment traced to CTS Coal tar sealant is still in use especially east of the Rockies This source of PAHs is preventable AND safer substitutes exist which are comparable in performance and cost
26 Outreach Primary manufacturers - no Elimination appeal to retailers, distributors Contractors-applicators pledge not to apply CTS Offer listing/mapping to connect them to buyers Guidance on safer alternatives and application Education/appeal to many buyers & groups School district, shopping center, business, worship Municipalities, colleges (education and/or policy) Residents: indirect and direct through partners
27 MPCA web resources
28 Great Lakes area actions October 2016 Full U.S. List at 28
29 Lessons learned and to be learned Where regulatory and market drivers are in place, providers are more responsive Where drivers not yet in place, need to start by educating pavement owners, purchasers, local gov t Educate citizen groups, who reinforce this messaging MI municipalities and colleges were responsive More education, appeals to hospitals/care facilities MPCA will provide some assistance in & outside MN New CTS sub (CAS # ) may be 4,000 30,000 ppm PAH (air/week 1 water vs. air/sediment concern) Compare to asphalt-based at 50 ppm and CTS at 50,000 ppm 29
30 Project metrics Project CTS reduction (13 respondents) Mid-range of project PAH reduction If all 62 eliminated PAHs at same rate 93,500 gal 38.7 tons 223 tons Safer sealcoat use by pledgers M gallons (680,000 in Minnesota) M gallons (outside Minnesota)
31 Long-term metrics Compliance, where restricted Follow-up sediment monitoring as in Austin, Texas 2014 follow-up after 8 years of CTS ban finding 58% decline of coal tar PAHs 31
32 Further Information MPCA page Science: U.S. Geological Survey web page For municipals: MPCA Restriction on Coal Tar Sealants
33 Reduction of Nonylphenol Ethoxylates (NPEs) Use in Laundry Detergents
34 Nonylphenol ethoxylates (NPEs) surfactant in detergents degreasers dry cleaning aids petroleum dispersants emulsifiers wetting agents adhesives pesticides (indoor and row crop) cosmetics Degrades to nonylphenol paper and textile processing formulations prewash spotters metalworking fluids oilfield chemicals paints and coatings dust control agents phosphate antioxidants for rubber & plastics miscellaneous uses, including lube oil additives 34
35 Nonylphenol effects Very high Medium Medium Biomonitoring shows Medium general exposure Very high Extra concern for Very high women and children Very high High Medium Medium from pharosproject.net Medium 35 Multiple
36 Focus on NPEs in detergents While not regulated, gradually eliminated By 1980s, from consumer detergents Industrial laundries/epa stewardship initiatives EPA assessment finds feasible safer alternatives 2010: Industrial laundries commit to end use MPCA survey in 2013 confirms that most major facilities had already eliminated NPEs Only 2 smaller facilities had yet to eliminate 36
37 NPE reductions in Minnesota 12 MN facilities report 323 tons/year reduction of NPE 7 of the 12 discharge to Main Metro WWTP 179 tons/yr reduced but little change in Main Metro influent NPE 37
38 Other pieces of the NPE puzzle 2013 phone calls to large hotels near Mall of America showed many laundering in-house; some using NPEs 2015 tests show low levels in domestic WW Good removal at Metro Plant, but what about lesser treatment, septics, transfer to biosolids? 2016: began a project to try to understand other commercial/institutional detergents 38
39 2016 NPE detergents project 3 local college student interns through May Surveys and/or phone interviews, s Providers: manufacturers and distributors Users: hospitals, clinics, surgical centers, nursing homes, long-term care, hotels, others Associations of users; major health care systems and associations, hotel groups 39
40 2016 results: progress in recent years Little use by larger, centrally-managed hotels, hospitals, and long-term care systems More attention in corporate sustainability, purchasing Isolated use by unaffiliated facilities or franchises, particularly outside the Twin Cities (follow-up?) One off-site laundering sector was missed: NAICS ; not industrial (follow-up?) One facility we assisted reduced ~120 lbs/year NPE, about 1.5 lbs per patient bed/year Smaller-scale total reductions but will retest influent 40
41 Long-term metrics Influent to WWTPs Environmental monitoring Monitor data on quantities used (EPA Chemical Data Reporting, other) 41
42 What could be next? Returning to this list surfactant in detergents degreasers dry cleaning aids petroleum dispersants emulsifiers wetting agents adhesives pesticides (indoor and row crop)?? cosmetics paper and textile processing formulations?? prewash spotters metalworking fluids oilfield chemicals paints and coatings dust control agents phosphate antioxidants for rubber & plastics miscellaneous uses, including lube oil additives 42
43 Thank you! Any questions? Al Innes Thermal paper project: Coal tar sealcoat: NPEs in detergents: 43
44 Reduction of Salt Use in Winter Maintenance See: Web page: Report:
45 Pre-test: is this enough salt?
46 2014 Twin Cities surface water chloride Exceedance of chronic effects standard: 230 mg/l Highest: 964 mg/l 46
47 2014 Minnesota groundwater chloride EPA standard: 250 mg/l 27% of Twin Cities sand/ gravel wells exceeded 47
48 Chloride sources Direct discharge: Winter maintenance Dust suppressants, fertilizers, land application Indirect discharge: Municipal wastewater Municipal water treatment Industrial wastewater Residential water softeners 48
49 Annual U.S. highway salt sales Twin Cities winter total: 349,000 tons/year (2007 estimate) 49
50 Chloride issues Disruption of cellular processes in fish, invertebrates, some plant species If high levels persist, can lead to stress and death Additives/contaminants such as phosphorus, cyanide, copper, zinc Persists, so concentrations build over time Not feasible to remove 78% of salt applied in Twin Cities is transported to surface and ground water (U of Minnesota) 50
51 51
52 Training program ( Smart Salting Level 1 for individuals Roads class Parking lot/sidewalk class Certificate holders are listed Level 2 for organizations (public or private) Complete an assessment Does not require employees to be Level 1 certified Certificate holders list, including private applicators Maintain through annual updates 52
53 Post-test: Which is the right amount?
54 State agency opportunities 1. Buying from the State contracts for winter maintenance 2. Working with landlords and leased offices 3. Providing feedback to vendors and Plant Management staff
55
56 What about water softening? Average chloride in effluent from 3 Twin Cities WWTPs ranges from 521 mg/l to 618 mg/l 56
57 Metrics Environmental monitoring Monitor data on quantities used 57
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